Abstract: A solar cell and a photovoltaic module are provided. The solar cell includes a substrate and a passivation layer formed over the substrate; finger electrodes arranged in the first direction and each extending in a second direction, where the finger electrodes include rows of first finger electrodes and rows of second finger electrodes alternatingly arranged in the first direction, and each row of first finger electrodes is between two adjacent rows of second finger electrodes, and where the finger electrodes penetrate the passivation layer to be electrically connected with the substrate; main busbars arranged in the second direction and formed over the passivation layer; and at least one edge electrode extending in the second direction.

Abstract: A solar cell is provided, including: a substrate including a center region and edge regions respectively arranged on two opposing sides of the center region, fingers arranged at intervals along the first direction and extending along a second direction, pad groups arranged at intervals along the second direction, and busbars arranged at intervals along the second direction. The fingers including a number of fingers in the center region, each pad group includes pads arranged at intervals along the first direction, and the pads include a number of pads in the center region that are respectively connected to the number of fingers in the center region. Each busbar is connected to a respective pad group of some of the pad groups, and at least one pad group is disposed between two adjacent busbars.

Abstract: Provided are a photovoltaic module, comprising a solar cell string having a plurality of solar cells arranged in sequence, adjacent solar cells being connected by solder strips, the solder strip being connected to a front surface of one solar cell and to a back surface of the other solar cell, a long-side dimension of the solar cell being within a range of 150 mm to 220 mm; two protective adhesive layers respectively covering front and back surfaces of the solar cell string, a dimensional difference between thicknesses of one protective adhesive layer and the solder strip being defined as first thickness, a ratio of the first thickness to the thickness of one protective adhesive layer being not less than 0 and not greater than 20%; a transparent plate covering the protective adhesive layer on the front surface; and a back plate covering the protective adhesive layer on the back surface.

Abstract: The present disclosure provides a functional part, a photovoltaic module and a manufacturing method of photovoltaic modules. The functional part is configured to form a photovoltaic module with a cell string that includes a plurality of cells. Adjacent cells of the cell string share an overlapped region. The functional part has a first surface facing the cell string and a second surface opposite to the first surface. The functional part includes at least one groove extending from the first surface towards the second surface. A location of each groove corresponds to a location of at least one overlapped region.

Abstract: The present disclosure provides an adhesive film for a photovoltaic module and a photovoltaic module. The adhesive film includes an edge portion, a transition portion, and a middle portion. The edge portion is provided with a first embossment recessed towards the interior of the edge portion. The transition portion is provided with a second embossment recessed towards the interior of the transition portion. The middle portion is provided with a third embossment recessed towards the interior of the middle portion. The edge portion is connected to the middle portion through the transition portion, a recessed space volume per unit area of the third embossment is greater than a recessed space volume per unit area of the second embossment, and the recessed space volume per unit area of the second embossment is greater than a recessed space volume per unit area of the first embossment.

Abstract: Embodiments of the disclosure provide a method for manufacturing a photovoltaic module, including: providing at least one cell string, an end portion of each cell overlaps with an end portion of an adjacent cell to form a corresponding overlapping welding region; for each overlapping welding region, forming a film insertion opening between stacked end portions of the two adjacent cells forming the each overlapping welding region; providing at least one film strip, and inserting a part of each film strip into a corresponding film insertion opening, such that a width of the part of the each film strip inserted into the corresponding film insertion opening is larger than a width of the remaining part of the each film strip; and closing each film insertion opening.

Abstract: Provided are a solar cell, a method for manufacturing a solar cell, and a photovoltaic module. A plurality of first pad groups and at least one second pad group are arranged along a first direction on a back surface of the solar cell. The second pad group is distributed in a region of the solar cell adjacent to a cut edge or a non-cut edge of the solar cell. The first pad groups are distributed in a region of the solar cell away from the cut edge or the non-cut edge. Along the first direction, a distance between a pad in the second pad group and a pad in the first pad group adjacent to the pad in the second pad group is greater than a distance between adjacent pads in adjacent first pad groups.

Abstract: A solar cell and a photovoltaic module are disclosed. The photovoltaic module includes a substrate, busbars, and at least one marker. The busbars are arranged on a same side of the substrate, and include at least a first busbar and a second busbar, the first busbar and the second busbar have opposite polarities, the first busbar has a first pad, the second busbar has a second pad, the first pad and the second pad are arranged sequentially along a straight line parallel to an arrangement direction of the busbars, and a distance from a marker to the first pad is different from a distance from a same marker to the second pad.

Abstract: The present disclosure relates to the technical field of photovoltaic modules, and in particular, to a solar cell and a photovoltaic module. The solar cell includes a substrate and a positive gate line and a negative gate line that are arranged on a back surface of the substrate, wherein the positive gate line and the negative gate line are alternately arranged and are not connected. An edge portion of at least one side of the back surface in at least one direction is an insulating portionoverlap with one anotheroverlap with one another.

Abstract: Embodiments of the disclosure provide a method for manufacturing a photovoltaic module, including: providing at least one cell string an end portion of each cell is stacked with an end portion of an adjacent cell to form a corresponding overlapping welding region; for each overlapping welding region, forming a film insertion opening between stacked end portions of the two adjacent cells corresponding to the each overlapping welding region; providing at least one film strip, and inserting a part of each film strip into a corresponding film insertion opening; moving the at least one cell string relative to the at least one film strip; and closing the film insertion openings so that the each film strip is inserted between the two adjacent cells of the corresponding overlapping welding region.

Abstract: Embodiments of the present disclosure provide a method for welding cell strings and a series welding machine. The method includes: forming an arrangement of a plurality of solar cells; inspecting the arrangement of the plurality of solar cells; providing a plurality of initial welding strips including first initial welding strips and second initial welding strips, the first initial welding strips interleave with the second initial welding strips in a first direction; cutting each of the first initial welding strips at first cutting positions, and cutting each of the second initial welding strips at second cutting positions, to obtain a plurality of welding strips; moving each welding strip in a second direction to form a set of welding strips; transferring the set of welding strips onto the arrangement of the plurality of solar cells; and welding the plurality of welding strips to corresponding solar cells to form a cell string.

Abstract: A method for manufacturing photovoltaic module includes: providing solar cells and a solder strip; applying insulating adhesive on rear surface of the solar cells; laying the solar cells along a first direction; placing the solder strip on the solar cells so that, along the first direction, one end of the solder strip abuts against a positive busbar of one solar cell, and is bonded to the insulating adhesive, and the other end of the solder strip abuts against a negative busbar of another solar cell adjacent thereto, and is bonded to the insulating adhesive; curing the insulating adhesive by irradiation with an ultraviolet lamp, so that the solar cells form a solar cell string; arranging the solar cell strings along a second direction, and connecting to form a photovoltaic cell pack; providing and laminating front packaging structure, the photovoltaic cell pack, and back packaging structure to form the photovoltaic module.

Abstract: A photovoltaic module and a method for manufacturing photovoltaic module. The photovoltaic module includes a solar cell, a pad, fasteners, and a solder strip. The pad is arranged on the solar cell and includes first, second, and third parts, the first part is connected to the third part through the second part, and along a length direction of the solder strip, a width of the second part is less than a width of the first part and a width of the third part. The fasteners are arranged on a side of the first part facing away from the solar cell and a side of the third part facing away from the solar cell, the solder strip is provided between the fastener in the first part and the fastener in the third part, and the solder strip is connected to the pad through the fastener to form a solar cell string.

Abstract: The present disclosure relates to a photovoltaic module, a manufacturing method for a photovoltaic module, and a machining device. The photovoltaic module includes solar cell strings and electrode lines. Each of the solar cell strings includes solar cells arranged in parallel, and each of the electrode lines is located on a side of a corresponding solar cell and configured to connect adjacent solar cells to form the solar cell strings. soldering regions are arranged apart along a length direction of the photovoltaic module, connecting members are arranged in the soldering regions, each of the electrode lines is located on a side of a corresponding solar cell provided with the connecting members on the side.

Abstract: A method for manufacturing a silicon wafer, a solar cell, and a photovoltaic module. The method includes: selecting four arc segments on a circumference of the silicon ingot according to chamfering parameters of the solar wafer; squaring the silicon ingot along lines connecting adjacent chamfered arc segments to obtain a rectangular body having a rectangular cross section with chamfers; and cutting the rectangular body along a direction perpendicular to a length direction of the silicon ingot to obtain a rectangular silicon wafer with chamfers.

Abstract: A photovoltaic module includes a plurality of solar cells connected by leads. The solar cells are arranged with a preset gap or are arranged overlapping with one another. A shape of the lead matches arrangement of the solar cells. The lead includes a flat section having a smaller thickness than other sections.

Abstract: Provided are a solar cell, a photovoltaic module, and a method for manufacturing a silicon wafer. The solar cell includes a silicon substrate in a rectangular shape, and 13 to 20 busbars. The busbars are sequentially arranged along a width direction of the solar cell at an equal spacing of a mm. The silicon substrate includes a first edge and a second edge opposite to the first edge in the width direction of the solar cell. A distance between the first edge of the silicon substrate and an outermost busbar adjacent to the first edge is b mm, where a?1?2b?a+1.

Abstract: The solar cell includes a substrate having a first surface and a second surface opposite to the first surface, and multiple first busbars arranged sequentially along a first direction on the first surface of the substrate, where at least one of the multiple first busbars is near at least one of the two opposite edges of the substrate along the first direction includes at least one first widened portion. The solar cell further includes multiple second busbars arranged sequentially along the first direction on the second surface of the substrate, where at least one of the multiple second busbars is near at least one of the two opposite edges of the substrate along the first direction includes at least one second widened portion, and each of the at least one second widened portion is larger than each of the at least one first widened portion.

Abstract: A photovoltaic module includes a first cover plate, a first adhesive film, a cell string, a second adhesive film and a second cover plate. The first cover plate has a first surface, facing the cell string and including a central area and an edge area surrounding the central area. The first adhesive film includes a first sub-adhesive film located on at least part of the edge area, and a second sub-adhesive film located on a surface of the first sub-adhesive film away from the first surface and having an orthographic projection on the first surface at least covering the central area and part of the edge area. Material of part of the first sub-adhesive film facing the cell string is the same as material of part of the second adhesive film facing the cell string, and material of part of the second sub-adhesive film facing the cell string is POE.

Abstract: A photovoltaic module includes a first sealing member, a pad strip, a solar cell string, and a second sealing member. A cross-linking rate of a material of the second sealing member is higher than that of a material of the first sealing member. The first sealing member, the solar cell string, and the second sealing member are sequentially arranged along a thickness direction of the photovoltaic module. The pad strip is located around the solar cell string and located between the first sealing member and the second sealing member. The pad strip is made of a same material as the first sealing member. A thickness of the first sealing member, a thickness of the second sealing member, and a thickness of the pad strip all gradually decrease along a length direction of the photovoltaic module towards an edge of the photovoltaic module.